Cascading Style Sheets, level 2,
B. Bos, H. W. Lie, C. Lilley, I. Jacobs, eds.
World Wide Web Consortium, 11 April 2008.
This edition of CSS2 is http://www.w3.org/TR/2008/REC-CSS2-20080411/ and is no longer maintained.
The latest edition of CSS2 is available at
http://www.w3.org/TR/CSS2/. The CSS Working Group encourages authors and
implementors to reference CSS 2.1 (or its successor) instead of this
document and,
when features common to CSS2 and CSS 2.1 are defined differently
to follow the definitions in CSS 2.1. A list of changes between CSS2 and CSS 2.1 may be helpful.
In particular, future editions of SVG are expected to reference CSS 2.1 and CSS 3 Fonts.

SMIL Animation,
P. Schmitz, A. Cohen.
World Wide Web Consortium, 04 September 2001.
This edition of SMIL Animation is http://www.w3.org/TR/2001/REC-smil-animation-20010904/.
The latest edition of SMIL Animation is available at
http://www.w3.org/TR/smil-animation/.

RDF Primer,
F. Manolas, E. Miller, eds.
World Wide Web Consortium, 10 February 2004.
This edition of RDF Primer is http://www.w3.org/TR/2004/REC-rdf-primer-20040210/.
The latest edition of RDF Primer is available at
http://www.w3.org/TR/rdf-primer/.

Window Object 1.0,
I. Davis, M. Stachowiak, eds.
World Wide Web Consortium, work in progress, 07 April 2006.
This edition of Window Object 1.0 is http://www.w3.org/TR/2006/WD-Window-20060407/.
The latest edition of Window Object 1.0 is available at
http://www.w3.org/TR/Window/.